Stihl FS 120 Manual

5/20/2018
STIHL FS 350 Service manual.pdf - slidepdf.com
http://slidepdf.com/reader/full/stihl-fs-350-service-manualpdf 6/63
DG and P screws (Plastoform) are used in polymer and lightmetal components. These screws form a perma-
nent thread when they are installed for the first time. They can be removed and installed as often as necessary
without detrimentally affecting the strength of the screwed assembly, providing the specified tightening torque is
observed. For this reason it isessential to use a torque wrench.
Fastener Thread For component Torque Remarks
size Nm lbf.ft
Self-tapping screw IS-B3.5x6.5 Rewind spring/fan housing 1.5 1.1
Self-tapping screw IS-B4.2x9.5 Muffler/spark arresting screen 2.5 1.8 1) 2)
Spline screw IS-DG4x20 Ignition module/crankcase 4.5 3.3 3) 4) 5)
Spline screw IS-DG5x24 Ignition module/crankcase 6.0 4.4 1) 2)
Spline screw IS-DG5x12 AV sleeve/drive tube (fixing screw) 2.5 1.8 3)
Spline screw IS-DG5x12 Guard ring/gear housing 5.0 3.7 1) 4)
Spline screw IS-DG5x20 Fan housing/crankcase 6.0 4.4
Spline screw IS-DG5x20 Fan housing/shroud/crankcase 6.0 4.4
Spline screw IS-DG5x20 Carburetor housing/crankcase/
cylinder 6.0 4.4
Spline screw IS-DG5x20 Filter housing/ground wire/
crankcase 6.0 4.4
Spline screw IS-DG5x20 Ground wire/crankcase 6.0 4.4 1) 2)
Spline screw IS-DG5x26 Fuel tank/crankcase 6.0 4.4
Spline screw IS-DG5x24 Bracket/crankcase 6.0 4.4 1)
Spline screw IS-DG5x20 Shroud/clutch housing 6.0 4.4
Spline screw IS-DG5x26 Guard plate/fuel tank/
crankcase 6.0 4.4 1) 2)
Spline screw IS-DG5x28 Cylinder/crankcase 10.5 7.5
Spline screw IS-DG5x24 Muffler/crankcase 8.5 6.3
Spline screw IS-DG5x24 Muffler/cylinder 8.5 6.3
Spline screw IS-DG5x24 Crankcase 8.5 6.3
Spline screw IS-DG5x24 Clutch housing/crankcase 8.5 6.3 1) 2) 4) 5)
Spline screw IS-DG5x24 Clutch housing/crankcase 6.0 4.4 3)
Spline screw IS-DG6x28 Clutch housing/drive tube 12.0 8.8 1) 6)
Spline screw IS-DG5x24 Clutch housing/drive tube 8.5 6.3 4)
Spline screw IS-DG5x24 Gear housing/drive tube 8.5 6.3 2) 3) 5)
Spline screw IS-DG5x25 Gear housing/drive tube
Stage 1 1.5 1.1 1) 4)
Stage 2 7.5 5.5 1) 4)
Collar nut M5 Filter housing/carburetor housing 3.5 2.6
Collar screw M5/P6 Carburetor housing 4.0 3.0
Spline screw IS-M5x12 Clamp/control handle/
drive tube (loop handle) 2.0 1.5 3) 4)
Spline screw IS-M5x16 AV sleeve/drive tube (clamp screw) 5.5 4.0 3)
Spline screw IS-M5x12 Clamp/control handle/drive tube 2.0 1.5 2) 5)
Spline screw IS-M5x16 Clamp/drive tube (for harness) 4.5 3.3 3)
Spline screw IS-M5x30 Control handle (bike handle) 2.0 1.5 6)
2.6 Tightening Torques
FS 120, 200, 300, 350, 400, 450, FR 350, 450 5

Stihl FS 120 Specifications

General

Power source	Gasoline
Type	Brush cutter
Cordless	Yes
Head type	Nylon line
Handle type	U-type handle
Engine power	1.8 hp
Product color	Black, Metallic, Orange
Uncertainty K	2 m/s²
Sound power level	110 dB
Fuel tank capacity	0.64 L
Vibration emission	4.9 m/s²
Engine displacement	30.8 cm³
Sound pressure level	98 dB
Cutting diameter (max)	- mm

Weight and Dimensions

Length	1760 mm
Weight	6300 g